Chalcogenide Perovskites for Photovoltaics

Chalcogenide perovskites are proposed for photovoltaic applications. The predicted band gaps of CaTiS3, BaZrS3, CaZrSe3, and CaHfSe3 with the distorted perovskite structure are within the optimal range for making single-junction solar cells. The predicted optical absorption properties of these mater...

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Bibliographic Details
Published inNano letters Vol. 15; no. 1; pp. 581 - 585
Main Authors Sun, Yi-Yang, Agiorgousis, Michael L, Zhang, Peihong, Zhang, Shengbai
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 14.01.2015
Subjects
Cations
Chalcogenides
Energy gaps (solid state)
Halides
Nanostructure
Perovskites
Photovoltaic cells
Solar cells
optical absorption
Perovskites
chalcogenides
zirconium
titanium
photovoltaics
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Summary:Chalcogenide perovskites are proposed for photovoltaic applications. The predicted band gaps of CaTiS3, BaZrS3, CaZrSe3, and CaHfSe3 with the distorted perovskite structure are within the optimal range for making single-junction solar cells. The predicted optical absorption properties of these materials are superior compared with other high-efficiency solar-cell materials. Possible replacement of the alkaline-earth cations by molecular cations, e.g., (NH3NH3)2+, as in the organic–inorganic halide perovskites (e.g., CH3NH3PbI3), are also proposed and found to be stable. The chalcogenide perovskites provide promising candidates for addressing the challenging issues regarding halide perovskites such as instability in the presence of moisture and containing the toxic element Pb.
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ISSN:1530-6984
1530-6992
DOI:10.1021/nl504046x